critical9.8
CVE-2020-36434
Double free in sys-info
Impact
Affected versions of sys-info use a static, global, list to store temporary disk information while running. The function that cleans up this list, DFCleanup, assumes a single threaded environment and will try to free the same memory twice in a multithreaded environment. This results in consistent double-frees and segfaults when calling sys_info::disk_info from multiple threads at once. The issue was fixed by moving the global variable into a local scope.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rust | sys-info | < 0.8.0 | 0.8.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Sys-Info Project | Sys-Info | before 0.8.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/sys-info/RUSTSEC-2020-0100.md
- https://rustsec.org/advisories/RUSTSEC-2020-0100.html
- https://github.com/advisories/GHSA-2f5j-3mhq-xv58
- https://nvd.nist.gov/vuln/detail/CVE-2020-36434
- https://github.com/FillZpp/sys-info-rs/issues/63